CentOS 7.0 - man page for xmtextgetsubstringwcs (centos section 3)
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XmTextGetSubstringWcs(library call) XmTextGetSubstringWcs(library call)
XmTextGetSubstringWcs -- A Text function that retrieves a portion of a wide character
internal text buffer
XmTextGetSubstringWcs retrieves a copy of a portion of the internal text buffer of a Text
widget that is stored in a wide character format. The function copies a specified number
of characters from a given start position in the internal text buffer into a buffer pro-
vided by the application. A NULL terminator is placed at the end of the copied data.
widget Specifies the Text widget ID.
start Specifies the beginning character position from which the data will be
retrieved. This is an integer number of characters from the beginning of the
text buffer. The first character position is 0 (zero).
num_chars Specifies the number of wchar_t characters to be copied into the provided buf-
Specifies the size of the supplied buffer as a number of wchar_t storage loca-
tions. The minimum size is num_chars + 1.
buffer Specifies the wide character buffer into which the internal text buffer will be
For a complete definition of Text and its associated resources, see XmText(3).
The function was successful.
The function failed because it was unable to copy the specified number of char-
acters into the buffer provided. The buffer size may be insufficient. The con-
tents of buffer are undefined.
The requested number of characters extended beyond the internal buffer. The
function copied characters between start and the end of the widget's buffer and
terminated the string with a NULL terminator; fewer than num_chars characters
XmText(3) and XmTextGetSubstring(3).
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